Surgical instrument



June 22,1926. 1,589,923

R. W. ARMSTRONG SURGI CAL INSTRUMENT Filed July 30 1924 7 provide asurgical instrument of the above.

- posesfor Patented June 22', 1926.

UNITED STATES 1,589,923 PATENT" OFFICE.

ROBERT W. ARMSTRONG, 'OEVANGOUVER, WASHINGTON.

' sunercu. INSTRUMENT.

Application filed July 30, 1924. Serial No. 729,116.

moval of the tonsils A further object of the invention is to mentionedcharacter, which is "simple in construction, inexpensive, strong anddurable andfurthermore-adapted for the purwhich it is designated.

Other objects and advantages of this invention will become apparentduring the course of the following description.

. In the'accompanying drawing forming a part of this specification andin which like numerals designate like parts throughout the same:

Figure proved surgical instrument.

Figure 2ris a longitudinal sectional View through the barrel showing theligator member arranged therein and the pawls cooperatingwith theratchet teeth of the ligator member, and 1 z Fi ure 3 is-a sectionalview taken .approxlm'ately on line 3-3 of Figure 1.

In the drawing wherein for the purpose of illustration is shown thepreferred embodiment of my invention, the numeral 1 desi ates the barrelof my improved surgica instrument and the forward end thereof isinternally threaded as illustrated at 2 for receiving the rear threadedend of an elongated sleeve 3, the diameter of which is less than thediameter of the barrel. The sleeve 3 is provided with a knurled flange 4adjacent the rear end thereof for facilitating the attaching of thesleeve in the forupper end bifurcated and pivotally secured on' o positesides of the rear end of the barre 1 by means of the screws 6. Thescrews are adapted to extend through suitable openings provided in theupper bifurcated end of the handle 5- and are threaded into suitablethreaded openin provided in o posite sides of the barrel 1 1n the mannerc early illustrated in Figure 2 of the drawm j v Fxtiandinglongitudinally throu h the barrel and the sleeve 3 carried by e forwardend thereof is thehgatormember designated generally by the numeral 7 The1 is a, side elevation of my im-.

'ther provided opening 17 which is A handle, desigmajor portion ofthe-ligator member 7 comprises a substantially square shaped bar 8.

the same being disposed in the barrel 1 and having the rear end thereofextending beyond the rear end of the barrel 1. The substantially squareshaped portion 8 has provided in the forward face thereof the ratchetteeth 9 and the purpose thereof will hereinafter be more fullydescribed.

The forward portion of the ber=10 which extends through the sleeved) andthe forward end thereof projects beyond the, forward end of the sleeve.The

ligatormemher 7 compnses a reduced cylindrlcal menu-- forward end of thecylindrical portion 10 caved portions such as are illustrated at 11 andalso provided in the forward end of the cylindrical portion 10 andextending through the concaved portion' are the openings through one ofthe openings in the manner illustrated in Figure 1 of the drawing.

An operating lever or handle 14 is pivot-. ally associated with thehandle 5 as at 15 and the upper end of the operating lever or handle isenlarged as illustrated at 16 and is furwith a transversely extendingalso substantially square for the purpose of receiving the rear-end ofthe substantially square bar 8 forming the rear portion of the ligatormember 7. Secured operating handle 14 is the finger 18 which is formedof spring end thereof is provlded with an inwardly disposed pawl 19which extends through a suitable opening provided in the front face ofthe enlarged portion 16 of the lever 14 and engages the ratchetlteeth 9for the purpose of'inoving the ligator member 7 rearwardly through thebarrel hereinafter to'be more fully described. For the purpose ofreleasing the pawl 19 from engagement with the ratchet teeth 9, thespring tinge transversely extending pin 20 which is arranged in asuitable opening provided in the upper portion of the handle 14 and anenlarged head 21 is arranged on the pin. 20

is provided with diametrically opposed con- 12. A. ligature 13 isadapted to extend metal and the upper in the manner r 18 has securedthereto the and extends beyond the rear face of the handle in the manneras clearly illustrated in Figure 3.

For the purpose of preventing the ligator memberfroin moving forwardlywithin the barrel and sleeve the spring pressed pawl 22 is pivotallysupported on the barrel 1 as illustrated at 23 and the inner end of thepawl extends through a suitable opening 2st also provided in the barrelwhereby the pawl will engage the ratchet teeth 9.

The operation of my improved surgical instrument maybe briefly stated asfollows The parts are arranged as illustrated in Figure 1 of thedrawing, with the ligature received in one of the openings 12 providedin the forward erid'of the ligature carrier. The instrument is thengrasped and the sleeve 3 is placed in the mouth of the patient in such amanner as to have the ligature disposed around the infected tonsil. The

handle 14 is then actuated so as to cause the pawl 19 to successivelyengage the ratchet teeth 9 of the rear portion. ofthe ligator membercausing the same to move rearwardly through the barrel and drawing theforward portion of the ligator member through the sleeve 3 in astep-by-step arrangement so as to facilitate the easy and ready removalof the infected tonsil. The spring pressed pawl will prevent the ligatormember from moving forwardly in thebarrelduring the operation of thesurgical instrument and by releasing the spring pressed pawl 22 theligator member will be permitted to move forwardly in the barrel and thesleeve.

Itwill thus be seen from the foregoing description, that a surgicalinstrument for removing infected tonsils has been provided which will bevery eiiicient and positive in carrying out the purposes for which it isdesignated and furthermore the parts are-so arrangedas to enable thesame to be readily disassembled whenever it becomes necessary.

lVhile I have shown the preferred embodiment of my invention, it is tobe understood that various changes in the size, shape and arrangement ofparts may be resorted to without departing from the spirit of theinvention and the scope of the appended claims.

Having thus described the invention, what I claim is 1. A surgicalinstrument of the class described comprisin a tubular open ended barrel,a rack bar slidably mounted in said barrel and having its toothed endextending benuisance yond the inner end of the barrel a sleeve Iconnected to the outer end of said barrel, said bar being provided witha cylindrical rod carried by the outer end and extending through andbeyond said sleeve, a ligature carried by theouter end of said rod, ahandle having an upper bifurcated end, said barrel being disposedbetween and pivotally conscribed comprising an open ended tubularbarrel, a sleeve threaded into the outer end ofsaid barrel and disposedin alignment with the latter, a cylindrical rod extending slidablythrough and beyond said sleeve, a ligature on the outer end of said rod,a rack bar slidable in said barrel and connected with said rod, thetoothed end of said rack bar, extending beyond the inner end of said Bilbarrel, said barrel being formed in one side A with an opening, a springpressed latch mounted upon the barrel and having engagement with theteeth of said bar, a handle bifurcated at its upper end, said barrelhaving its inner end disposed between and pivotally connected to thefurcations, a lever pivoted between its ends on the intermediate portionof said handle and provided at its top with a head through which theinner end of said bar is slidable, said head being formed at one sidewith an opening, a resilient finger fixedly mounted upon the upper endof said lever, a tooth carried by said finger and projecting throughsaid opening and cooperable with the teeth of said rack bar, and a pincarried by said lever and engageablewith said finger. for disengagingsaid tooth, said pin being provided with a finger piece.

In testimony wheereof I aflix my signature,

ROBERT w. ARMSTRONG.

